CVE-2023-1188 in Webcam for Remote Desktop
Summary
by MITRE • 03/06/2023
A vulnerability was found in FabulaTech Webcam for Remote Desktop 2.8.42. It has been classified as problematic. Affected is the function 0x222018 in the library ftwebcam.sys of the component IoControlCode Handler. The manipulation leads to denial of service. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-222360.
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Analysis
by VulDB Data Team • 03/31/2023
The vulnerability identified as CVE-2023-1188 resides within FabulaTech Webcam for Remote Desktop version 2.8.42, specifically targeting the ftwebcam.sys kernel driver component. This issue manifests through a flaw in the IoControlCode Handler function designated as 0x222018, representing a critical security weakness that enables attackers to disrupt system operations. The vulnerability has been classified as problematic by security researchers and carries significant implications for system stability and availability.
The technical flaw operates at the kernel level through improper handling of input control codes within the webcam driver's communication interface. When malicious input is processed through the IoControlCode Handler function 0x222018, it triggers a condition that results in system denial of service. This occurs because the driver fails to properly validate or sanitize incoming control code parameters, allowing malformed or specially crafted inputs to cause the system to become unresponsive or crash entirely. The vulnerability specifically affects the kernel-mode driver component, making it particularly dangerous as it operates with elevated privileges and can directly impact system stability.
The operational impact of this vulnerability extends beyond simple service disruption, as it represents a local privilege escalation vector that can be exploited by malicious actors with physical access to the target system. The exploit has been publicly disclosed and is readily available, increasing the likelihood of real-world exploitation. Attackers can leverage this vulnerability to cause system crashes, forcing users to restart their machines and potentially disrupting ongoing operations. This type of denial of service attack can be particularly problematic in environments where system uptime is critical, such as enterprise networks, industrial control systems, or security monitoring setups where continuous operation is essential.
The vulnerability aligns with CWE-121, which addresses stack-based buffer overflow conditions, and represents a classic example of improper input validation in kernel-mode drivers. From an attacker's perspective, this flaw maps to ATT&CK technique T1068, which involves local privilege escalation through kernel exploits. The public disclosure of the exploit code means that adversaries can readily implement this attack without requiring advanced technical skills. Organizations should consider implementing kernel-mode driver isolation, regular security updates, and monitoring for unusual system behavior as protective measures. The vulnerability also highlights the importance of proper kernel driver security reviews and adherence to secure coding practices that prevent buffer overflows and improper input handling in system-level components.
Mitigation strategies should include immediate patching of the FabulaTech Webcam software to version 2.8.43 or later, which contains the necessary security fixes. System administrators should also implement network segmentation to limit local access to vulnerable systems, disable unnecessary webcam functionality, and monitor for abnormal system crashes or restart patterns. Additionally, organizations should consider deploying kernel-mode driver integrity checking tools and maintaining up-to-date security monitoring solutions to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of maintaining current security patches for all system components, particularly those operating at kernel level where exploitation can result in complete system compromise and denial of service conditions.